Shake or Vibration Issues

[Txjose]

 

 

 

Step 1, took 3 hours to RFB all 8 tires.

Step 2, new shocks seems to take a full day.

Step 3, rear end or driveline seems take a few days. But, I think you can get a loaner. I have several cars so never paid much attention.

 

I fixed my wobble with a box wrench and 5 min. Got a little dirt on my knees since my driveway is dirt.

Elaborate as i am willing to go lay in about 4" of snow right now if i can fix it myself.

 

So frustrating as i have things to do when i get home. I have a pile of parts for the truck and domt want it at the dealer for a week and i cant do anything that i want.

 

I have another truck.... But its in the middle of a heart transplant...... 1700 miles away. Here u can drive the company truck but have bo time to take mine to the dealer that us an hour away.

 

 

 

Yay.....

 

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[rshad]

In April of 2015 I traded my 2013 Silverado Z71 crew cab in on a GMC Sierra All Terrain Crew Cab with a standard bed. On my way home from the dealership there was a VERY noticeable vibration from 45-55 miles per hour, and also a vibration at higher speeds(65+). I asked the dealership about the issue and they said the truck may just have flat spots on the tires from sitting on the lot. Told me to drive it a while and see if the problem corrects itself. I didn't argue, however, I could tell and knew that it was in the drivetrain and not in the tires. Upon bringing my truck back for it's first service I brought the vibration issue back up to the dealership and the still blamed the tires. Again, I didn't argue, allowing them to balance, or in my case unbalance all my tires. Apparently, their machine was out of calibration. I was on my way out of town upon completion of service and did not notice they were that far out of balance until I was quite a ways from the dealership. My trip from the dealership was only about two hours to my destination so I continued on and would just take it to a dealership in the area where I was headed. So, after driving for two hours on unbalanced tires and feeling what that feels like there was no question in my mind that my original vibration concern was definitely NOT in the tires. The other dealership re-balanced my tires and didn't address my original vibration concerns. I didn't say anything figuring I'd just get the run around from them too. Anyway, the vibration in the drivetrain was still evident. I talked to my father who has a 2014 Sierra Crew Cab 2WD short box. He said he has the same issue and definitely agreed with me that it is in the drivetrain. About a month and a half ago my dad, a very close family friend, and myself had to run and errand in my truck. The vibration at 50mph was very noticeable that day so, I asked the family friend(retired mechanic and GM mechanic for many, many years). He immediately said it was definitely in the drivetrain and said it felt like a torque issue. Meaning that the drivetrain was creating maximum torque for the gear it was in(overdrive and V4) creating the vibration. He recommended to me shimming the transmission to change the angle of the drive shaft. He said he has had the same vibration issues while building many cars throughout his years and said the shimming was the first place to start. So, I started digging into the issue further and landed here. I read many of the comments here to try and confirm or find a solution. Doesn't seem to be one though. I have yet to try shimming, but am seriously considering trying it after my latest visit to the dealership. While at the dealership for another issue on Thursday I asked the service manager if GM has found a fix for the drivetrain issue and he stated there was nothing that could be done to fix the issue.(FINALLY, A DEALERSHIP ADMITTING THAT THE VIBRATION IS IN THE DRIVETRAIN). He said to me that the issue was with the truck going into V4 creating the vibration. I'm still not satisfied with that answer because I stated to him my 2013 Z71 Crew Cab would go into V4 mode and I didn't experience any vibration issue with that truck. He really didn't have a good answer for that going onto blame the gov't standards set for the issue.

Well, I'm hesitant to modifying my truck by shimming it due to possibly voiding my warranty. However, I may just do it anyway and remove the shims prior to taking it in with any future major warranty issues. I love the truck other than the annoying vibration and don't see myself getting rid of it because of that, but as a long time GM truck owner I am disappointed GM would release vehicles with this type of issue being they've been the smoothest riding vehicles on the road for many years.

I will let everyone know if the shimming does the trick when I'm able to get to it.

 

The only problem with them saying it is when it goes into V4 is that even when you put it in tow mode it still vibrates and while in tow made it does not go into V4 mode from what I have been told. Plus why would it do it while in neutral coasting at 68mph. I know the rear and driveshaft are still turning but it should not be connected to the engine. So not sure but going into neutral would that not even eliminate the torque converter? I think this is going to be a long drawn out process.

[steelcity]

 

I fixed my wobble with a box wrench and 5 min. Got a little dirt on my knees since my driveway is dirt.

This ought to be good.

[Txjose]

 

The only problem with them saying it is when it goes into V4 is that even when you put it in tow mode it still vibrates and while in tow made it does not go into V4 mode from what I have been told. Plus why would it do it while in neutral coasting at 68mph. I know the rear and driveshaft are still turning but it should not be connected to the engine. So not sure but going into neutral would that not even eliminate the torque converter? I think this is going to be a long drawn out process.

Truck does go into V4 in tow/haul.... Hell mine stays in V4 more in tow then normal.

 

To turn off AFM you go to M and put it at 5

 

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[kchaggins]

I've been monitoring this topic for a yer since purchasing my 2014 Silverado January 2015. Unfortunately many still experience the shake problem at 71mph as I did. I just drove the hell out of mine, had 3 balance jobs,and 75mph to 85 mph drives to work every day. With all that said when I placed 100 pounds of hand tools over the rear tires absolutely ALL vibrations disappeared,fortunately. For some areodynamic issues should be considered as I have noticed in the past air pressure oscillation in direct phase with body vibration while in travel with windows down.

Edited February 1, 2016 by kchaggins

[WLC]

I've been monitoring this topic for a yer since purchasing my 2014 Silverado January 2015. Unfortunately many still experience the shake problem at 71mph as I did. I just drove the hell out of mine, had 3 balance jobs,and 75mph to 85 mph drives to work every day. With all that said when I placed 100 pounds of hand tools over the rear tires absolutely ALL vibrations disappeared,fortunately. For some areodynamic issues should be considered as I have noticed in the past air pressure oscillation in direct phase with body vibration while in travel with windows down.

x2 Edited February 1, 2016 by WLC

[frenchsquared]

Elaborate as i am willing to go lay in about 4" of snow right now if i can fix it myself.

 

So frustrating as i have things to do when i get home. I have a pile of parts for the truck and domt want it at the dealer for a week and i cant do anything that i want.

 

I have another truck.... But its in the middle of a heart transplant...... 1700 miles away. Here u can drive the company truck but have bo time to take mine to the dealer that us an hour away.

 

 

 

Yay.....

 

Sent from my Note 4 on Tapashit

 

I know this sounds stupid. I thought it was stupid when I heard it. Took me 3 weeks to finally try it.

http://www.streetsideauto.com/p/superior-13-1401/?utm_source=googlepepla&utm_medium=adword&gclid=Cj0KEQiAoby1BRDA-fPXtITt3f0BEiQAPCkqQbNBa23Pb4TyG6I8iIASWFSCGnTLjUUjvL-sHFlb_s8aAt0_8P8HAQ

 

I add those about 8" behind the u-bolts over the overload spring and both leaf springs. I tighten them down very tight thus compressing the over load. The ride is very different. The rear is softer then the front.

 

I have no idea why, I know it sounds stupid. My shake is gone no matter how stupid it seems.

[hotrodz37]

 

I know this sounds stupid. I thought it was stupid when I heard it. Took me 3 weeks to finally try it.

http://www.streetsideauto.com/p/superior-13-1401/?utm_source=googlepepla&utm_medium=adword&gclid=Cj0KEQiAoby1BRDA-fPXtITt3f0BEiQAPCkqQbNBa23Pb4TyG6I8iIASWFSCGnTLjUUjvL-sHFlb_s8aAt0_8P8HAQ

 

I add those about 8" behind the u-bolts over the overload spring and both leaf springs. I tighten them down very tight thus compressing the over load. The ride is very different. The rear is softer then the front.

 

I have no idea why, I know it sounds stupid. My shake is gone no matter how stupid it seems.

 

Your 70+mph highway shake is gone or lower speeds?

[frenchsquared]

I've been monitoring this topic for a yer since purchasing my 2014 Silverado January 2015. Unfortunately many still experience the shake problem at 71mph as I did. I just drove the hell out of mine, had 3 balance jobs,and 75mph to 85 mph drives to work every day. With all that said when I placed 100 pounds of hand tools over the rear tires absolutely ALL vibrations disappeared,fortunately. For some areodynamic issues should be considered as I have noticed in the past air pressure oscillation in direct phase with body vibration while in travel with windows down.

 

If the tools in the bed help... that might explain why the leaf spring clamp helped.

It does the same thing. The weight in the bed puts more weight on the rear pressing down to the overload.

 

Adding the clamp tightens the overload up to the leaf springs making it act as though it was under load.

 

Pulling a trailer, or loading the bed of mine did not get rid of my vibration.

Edited February 1, 2016 by frenchsquared

[frenchsquared]

 

Your 70+mph highway shake is gone or lower speeds?

 

70 is virtually gone. At 76 mph you could not put a cup in the center consul. It shook so bad you had to slow down or speed up. Was like a death wobble. I never had a low speed vibration.

 

Now, at 74 there is a very, very slight vibration. Im sure if there was water in the center consul you could see it shake, but overall it is smoother then my wife's 2016 corolla.

 

I had two things done. I RFB the tires. That made the shake less intense. I then add the clamp and it is gone.

The truck is a pleasure to drive again.

 

I can not believe I am telling people to try it. It sounds so stupid. But it made a night and day difference.

Edited February 1, 2016 by frenchsquared

[hotrodz37]

 

70 is virtually gone. At 76 mph you could not put a cup in the center consul. It shook so bad you had to slow down or speed up. Was like a death wobble. I never had a low speed vibration.

 

Now, at 74 there is a very, very slight vibration. Im sure if there was water in the center consul you could see it shake, but overall it is smoother then my wife's 2016 corolla.

 

I had two things done. I RFB the tires. That made the shake less intense. I then add the clamp and it is gone.

The truck is a pleasure to drive again.

 

I can not believe I am telling people to try it. It sounds so stupid. But it made a night and day difference.

 

That's crazy, great to hear! I have seen people on here try them before and after the axle. I have mine 5" in front of the blocks and the ride seems a little better around town but haven't been on the highway yet.

 

For those who are engineers or know more about this, would there be any rhyme or reason why putting them in front or in rear of the axle would work better? I am all for moving mine to the rear, just wondering the methodology behind it. Thanks in advance if someone can chime in!

[daveturton]

 

70 is virtually gone. At 76 mph you could not put a cup in the center consul. It shook so bad you had to slow down or speed up. Was like a death wobble. I never had a low speed vibration.

 

Now, at 74 there is a very, very slight vibration. Im sure if there was water in the center consul you could see it shake, but overall it is smoother then my wife's 2016 corolla.

 

I had two things done. I RFB the tires. That made the shake less intense. I then add the clamp and it is gone.

The truck is a pleasure to drive again.

 

I can not believe I am telling people to try it. It sounds so stupid. But it made a night and day difference.

 

 

Can you please post some pics of where you placed this on the truck? I'm mechanically inclined enough to install them, I'm just having a hard time figuring out where to clamp them.

[frenchsquared]

[daveturton]

Thanks!

[cornell1]

Nathan79,

 

I'd be happy to suggest this to the dealership. Tune it? Can you be more specific? Thanks.